OPB890N55Z Equivalent & Substitute Parts

Part Overview

The OPB890N55Z is a through-beam optical sensor manufactured by TT Electronics/Optek Technology, configured as a phototransistor module with pre-wired free-hanging mounting. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The sensor operates across the industrial temperature range of -40°C to 85°C and is ROHS3 compliant. Substitute parts must maintain identical electrical performance and sensing characteristics while offering active product status and improved availability.

Key Parameters

Parameter	Value
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Phototransistor
Current - DC Forward (If) (Max)	50 mA
Current - Collector (Ic) (Max)	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V
Operating Temperature	-40°C ~ 85°C
Type	Unamplified
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OPB890N55Z is determined by strict equivalence across the following critical parameters: sensing distance (0.125"), sensing method (through-beam), output configuration (phototransistor), maximum collector current (30 mA), maximum forward current (50 mA), collector-emitter breakdown voltage (30 V), and operating temperature range (-40°C to 85°C). All substitute parts must be unamplified optical sensors from the TT Electronics/Optek Technology OPB series.

Substitutes are categorized into two groups:

MFR Recommended Substitute: OPB890T55Z differs from the main part only in mounting type (PCB mount versus free-hanging) and package configuration (PCB mount versus module pre-wired). This part maintains all electrical specifications and is the manufacturer's direct recommendation.

Parametric Equivalents: OPB880N11Z and OPB880N55Z are functionally equivalent across all electrical parameters and maintain identical free-hanging module configuration with pre-wired packaging. These parts share the same sensing characteristics and operating specifications.

Parameter Comparison

Parameter	OPB890N55Z (Main)	OPB890T55Z (MFR Recommended)	OPB880N11Z (Parametric Equivalent)	OPB880N55Z (Parametric Equivalent)
Manufacturer	TT Electronics/Optek Technology	TT Electronics/Optek Technology	TT Electronics/Optek Technology	TT Electronics/Optek Technology
Product Status	Obsolete	Active	Active	Active
Sensing Distance	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Sensing Method	Through-Beam	Through-Beam	Through-Beam	Through-Beam
Output Configuration	Phototransistor	Phototransistor	Phototransistor	Phototransistor
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA	50 mA
Current - Collector (Ic) (Max)	30 mA	30 mA	30 mA	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V	30 V	30 V	30 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Type	Unamplified	Unamplified	Unamplified	Unamplified
Mounting Type	Free Hanging	Chassis Mount	Free Hanging	Free Hanging
Package / Case	Module, Pre-Wired	PCB Mount	Module, Pre-Wired	Module, Pre-Wired
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All substitute parts maintain full electrical and functional equivalence to the OPB890N55Z. Selection between substitutes depends on mechanical integration requirements:

OPB890T55Z is the manufacturer-recommended substitute and is the preferred choice when PCB-mount integration is feasible. This part offers active product status with 1452 units in stock and eliminates the need for external wiring harnesses.

OPB880N11Z and OPB880N55Z are appropriate when free-hanging module configuration with pre-wired connections is required. Both parts maintain active product status with substantial inventory availability (1329 and 945 units respectively). These parts are functionally interchangeable with the obsolete OPB890N55Z in applications requiring identical mounting and packaging.

All substitute parts carry ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can OPB890T55Z replace OPB890N55Z in all applications?

A: OPB890T55Z is electrically and functionally equivalent but differs in mounting type (PCB mount versus free-hanging). Substitution is valid only if the application can accommodate PCB-mount configuration. If the original design requires free-hanging module with pre-wired connections, use OPB880N11Z or OPB880N55Z instead.

Q: What is the difference between OPB880N11Z and OPB880N55Z?

A: Both parts are parametric equivalents with identical electrical specifications, sensing characteristics, and free-hanging module configuration. The difference lies in internal component variants designated by the suffix (N11Z versus N55Z). Both are functionally interchangeable for the OPB890N55Z application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. OPB890T55Z, OPB880N11Z, and OPB880N55Z are all ROHS3 compliant with REACH unaffected status, matching the regulatory compliance of the original OPB890N55Z.

Q: Why is OPB890N55Z listed as obsolete?

A: The OPB890N55Z has been superseded by active alternatives within the TT Electronics/Optek Technology optical sensor portfolio. All substitute parts offer improved availability and active product support.

Q: Can I use these substitutes in designs requiring -40°C to 85°C operation?

A: Yes. All substitute parts maintain the full operating temperature range of -40°C to 85°C, supporting industrial and extended temperature applications.

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